If the downloaded size exceeds the space available, auto expand the storage

Hi, I need to auto expand the storage in real time if the download size exceeds the space available in the local file system using the aws sdk in java . It can be related as the expandable storage on demand through java code in real time.

If , suppose the total available storage i 2 GB for now and the download folder size is 3 gb , then download should not break , and 2 GB should expand to 3GB on demand and further to 5GB if required . As , per the requirement the basic storage will be 2 GB which will first expand to 3GB and then to 5GB maximum .